Combating Coevolutionary Disengagement by Reducing Parasite Virulence
نویسندگان
چکیده
منابع مشابه
Combating Coevolutionary Disengagement by Reducing Parasite Virulence
While standard evolutionary algorithms employ a static, absolute fitness metric, coevolutionary algorithms assess individuals by their performance relative to populations of opponents that are themselves evolving. Although this arrangement offers the possibility of avoiding long-standing difficulties such as premature convergence, it suffers from its own unique problems, cycling, over-focusing ...
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Participating in an evolutionary arms-race, natural coevolutionary predator-prey and host-parasite systems often exhibit accelerated evolution. Competitive Coevolutionary Genetic Algorithms (CCGAs) attempt to harness this evolutionary acceleration by engaging (multiple) evolving populations in competitive self-play. By evaluating individuals competitively, CCGAs afford the possibility of tackli...
متن کاملParasite Virulence
Some parasites exact a terrible price from their hosts, causing severe pathology and reducing the host’s fitness, whereas other parasites are essentially benign. Several kinds of comparisons highlight this observation. Least interesting are comparisons of parasites with very different life histories or types of host tissues invaded (compare human immunodeficiency virus (HIV) and rhinovirus infe...
متن کاملPolymorphism in multilocus host parasite coevolutionary interactions.
Numerous loci in host organisms are involved in parasite recognition, such as major histocompatibility complex (MHC) genes in vertebrates or genes involved in gene-for-gene (GFG) relationships in plants. Diversity is commonly observed at such loci and at corresponding loci encoding antigenic molecules in parasites. Multilocus theoretical models of host-parasite coevolution predict that polymorp...
متن کاملCoevolutionary interactions between host and parasite genotypes.
More than 20 years after Dawkins introduced the concept of "extended phenotype" (i.e. phenotypes of hosts and parasites result from interactions between the two genomes) and although this idea has now reached contemporary textbooks of evolutionary biology, most studies of the evolution of host-parasite systems still focus solely on either the host or the parasite, neglecting the role of the oth...
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ژورنال
عنوان ژورنال: Evolutionary Computation
سال: 2004
ISSN: 1063-6560,1530-9304
DOI: 10.1162/106365604773955148